/**
 * Copyright (c) Tiny Technologies, Inc. All rights reserved.
 * Licensed under the LGPL or a commercial license.
 * For LGPL see License.txt in the project root for license information.
 * For commercial licenses see https://www.tiny.cloud/
 *
 * Version: 5.6.2 (2020-12-08)
 */
(function () {
    'use strict';

    var Cell = function (initial) {
        var value = initial;
        var get = function () {
            return value;
        };
        var set = function (v) {
            value = v;
        };
        return {
            get: get,
            set: set
        };
    };

    var global = tinymce.util.Tools.resolve('tinymce.PluginManager');

    var get = function (toggleState) {
        var isEnabled = function () {
            return toggleState.get();
        };
        return {isEnabled: isEnabled};
    };

    var fireVisualChars = function (editor, state) {
        return editor.fire('VisualChars', {state: state});
    };

    var noop = function () {
    };
    var constant = function (value) {
        return function () {
            return value;
        };
    };
    var never = constant(false);
    var always = constant(true);

    var none = function () {
        return NONE;
    };
    var NONE = function () {
        var eq = function (o) {
            return o.isNone();
        };
        var call = function (thunk) {
            return thunk();
        };
        var id = function (n) {
            return n;
        };
        var me = {
            fold: function (n, _s) {
                return n();
            },
            is: never,
            isSome: never,
            isNone: always,
            getOr: id,
            getOrThunk: call,
            getOrDie: function (msg) {
                throw new Error(msg || 'error: getOrDie called on none.');
            },
            getOrNull: constant(null),
            getOrUndefined: constant(undefined),
            or: id,
            orThunk: call,
            map: none,
            each: noop,
            bind: none,
            exists: never,
            forall: always,
            filter: none,
            equals: eq,
            equals_: eq,
            toArray: function () {
                return [];
            },
            toString: constant('none()')
        };
        return me;
    }();
    var some = function (a) {
        var constant_a = constant(a);
        var self = function () {
            return me;
        };
        var bind = function (f) {
            return f(a);
        };
        var me = {
            fold: function (n, s) {
                return s(a);
            },
            is: function (v) {
                return a === v;
            },
            isSome: always,
            isNone: never,
            getOr: constant_a,
            getOrThunk: constant_a,
            getOrDie: constant_a,
            getOrNull: constant_a,
            getOrUndefined: constant_a,
            or: self,
            orThunk: self,
            map: function (f) {
                return some(f(a));
            },
            each: function (f) {
                f(a);
            },
            bind: bind,
            exists: bind,
            forall: bind,
            filter: function (f) {
                return f(a) ? me : NONE;
            },
            toArray: function () {
                return [a];
            },
            toString: function () {
                return 'some(' + a + ')';
            },
            equals: function (o) {
                return o.is(a);
            },
            equals_: function (o, elementEq) {
                return o.fold(never, function (b) {
                    return elementEq(a, b);
                });
            }
        };
        return me;
    };
    var from = function (value) {
        return value === null || value === undefined ? NONE : some(value);
    };
    var Optional = {
        some: some,
        none: none,
        from: from
    };

    var typeOf = function (x) {
        var t = typeof x;
        if (x === null) {
            return 'null';
        } else if (t === 'object' && (Array.prototype.isPrototypeOf(x) || x.constructor && x.constructor.name === 'Array')) {
            return 'array';
        } else if (t === 'object' && (String.prototype.isPrototypeOf(x) || x.constructor && x.constructor.name === 'String')) {
            return 'string';
        } else {
            return t;
        }
    };
    var isType = function (type) {
        return function (value) {
            return typeOf(value) === type;
        };
    };
    var isSimpleType = function (type) {
        return function (value) {
            return typeof value === type;
        };
    };
    var isString = isType('string');
    var isBoolean = isSimpleType('boolean');
    var isNumber = isSimpleType('number');

    var map = function (xs, f) {
        var len = xs.length;
        var r = new Array(len);
        for (var i = 0; i < len; i++) {
            var x = xs[i];
            r[i] = f(x, i);
        }
        return r;
    };
    var each = function (xs, f) {
        for (var i = 0, len = xs.length; i < len; i++) {
            var x = xs[i];
            f(x, i);
        }
    };
    var filter = function (xs, pred) {
        var r = [];
        for (var i = 0, len = xs.length; i < len; i++) {
            var x = xs[i];
            if (pred(x, i)) {
                r.push(x);
            }
        }
        return r;
    };

    var keys = Object.keys;
    var each$1 = function (obj, f) {
        var props = keys(obj);
        for (var k = 0, len = props.length; k < len; k++) {
            var i = props[k];
            var x = obj[i];
            f(x, i);
        }
    };

    var Global = typeof window !== 'undefined' ? window : Function('return this;')();

    var TEXT = 3;

    var type = function (element) {
        return element.dom.nodeType;
    };
    var value = function (element) {
        return element.dom.nodeValue;
    };
    var isType$1 = function (t) {
        return function (element) {
            return type(element) === t;
        };
    };
    var isText = isType$1(TEXT);

    var rawSet = function (dom, key, value) {
        if (isString(value) || isBoolean(value) || isNumber(value)) {
            dom.setAttribute(key, value + '');
        } else {
            console.error('Invalid call to Attribute.set. Key ', key, ':: Value ', value, ':: Element ', dom);
            throw new Error('Attribute value was not simple');
        }
    };
    var set = function (element, key, value) {
        rawSet(element.dom, key, value);
    };
    var get$1 = function (element, key) {
        var v = element.dom.getAttribute(key);
        return v === null ? undefined : v;
    };
    var remove = function (element, key) {
        element.dom.removeAttribute(key);
    };

    var read = function (element, attr) {
        var value = get$1(element, attr);
        return value === undefined || value === '' ? [] : value.split(' ');
    };
    var add = function (element, attr, id) {
        var old = read(element, attr);
        var nu = old.concat([id]);
        set(element, attr, nu.join(' '));
        return true;
    };
    var remove$1 = function (element, attr, id) {
        var nu = filter(read(element, attr), function (v) {
            return v !== id;
        });
        if (nu.length > 0) {
            set(element, attr, nu.join(' '));
        } else {
            remove(element, attr);
        }
        return false;
    };

    var supports = function (element) {
        return element.dom.classList !== undefined;
    };
    var get$2 = function (element) {
        return read(element, 'class');
    };
    var add$1 = function (element, clazz) {
        return add(element, 'class', clazz);
    };
    var remove$2 = function (element, clazz) {
        return remove$1(element, 'class', clazz);
    };

    var add$2 = function (element, clazz) {
        if (supports(element)) {
            element.dom.classList.add(clazz);
        } else {
            add$1(element, clazz);
        }
    };
    var cleanClass = function (element) {
        var classList = supports(element) ? element.dom.classList : get$2(element);
        if (classList.length === 0) {
            remove(element, 'class');
        }
    };
    var remove$3 = function (element, clazz) {
        if (supports(element)) {
            var classList = element.dom.classList;
            classList.remove(clazz);
        } else {
            remove$2(element, clazz);
        }
        cleanClass(element);
    };

    var fromHtml = function (html, scope) {
        var doc = scope || document;
        var div = doc.createElement('div');
        div.innerHTML = html;
        if (!div.hasChildNodes() || div.childNodes.length > 1) {
            console.error('HTML does not have a single root node', html);
            throw new Error('HTML must have a single root node');
        }
        return fromDom(div.childNodes[0]);
    };
    var fromTag = function (tag, scope) {
        var doc = scope || document;
        var node = doc.createElement(tag);
        return fromDom(node);
    };
    var fromText = function (text, scope) {
        var doc = scope || document;
        var node = doc.createTextNode(text);
        return fromDom(node);
    };
    var fromDom = function (node) {
        if (node === null || node === undefined) {
            throw new Error('Node cannot be null or undefined');
        }
        return {dom: node};
    };
    var fromPoint = function (docElm, x, y) {
        return Optional.from(docElm.dom.elementFromPoint(x, y)).map(fromDom);
    };
    var SugarElement = {
        fromHtml: fromHtml,
        fromTag: fromTag,
        fromText: fromText,
        fromDom: fromDom,
        fromPoint: fromPoint
    };

    var charMap = {
        '\xA0': 'nbsp',
        '\xAD': 'shy'
    };
    var charMapToRegExp = function (charMap, global) {
        var regExp = '';
        each$1(charMap, function (_value, key) {
            regExp += key;
        });
        return new RegExp('[' + regExp + ']', global ? 'g' : '');
    };
    var charMapToSelector = function (charMap) {
        var selector = '';
        each$1(charMap, function (value) {
            if (selector) {
                selector += ',';
            }
            selector += 'span.mce-' + value;
        });
        return selector;
    };
    var regExp = charMapToRegExp(charMap);
    var regExpGlobal = charMapToRegExp(charMap, true);
    var selector = charMapToSelector(charMap);
    var nbspClass = 'mce-nbsp';

    var wrapCharWithSpan = function (value) {
        return '<span data-mce-bogus="1" class="mce-' + charMap[value] + '">' + value + '</span>';
    };

    var isMatch = function (n) {
        var value$1 = value(n);
        return isText(n) && value$1 !== undefined && regExp.test(value$1);
    };
    var filterDescendants = function (scope, predicate) {
        var result = [];
        var dom = scope.dom;
        var children = map(dom.childNodes, SugarElement.fromDom);
        each(children, function (x) {
            if (predicate(x)) {
                result = result.concat([x]);
            }
            result = result.concat(filterDescendants(x, predicate));
        });
        return result;
    };
    var findParentElm = function (elm, rootElm) {
        while (elm.parentNode) {
            if (elm.parentNode === rootElm) {
                return elm;
            }
            elm = elm.parentNode;
        }
    };
    var replaceWithSpans = function (text) {
        return text.replace(regExpGlobal, wrapCharWithSpan);
    };

    var isWrappedNbsp = function (node) {
        return node.nodeName.toLowerCase() === 'span' && node.classList.contains('mce-nbsp-wrap');
    };
    var show = function (editor, rootElm) {
        var nodeList = filterDescendants(SugarElement.fromDom(rootElm), isMatch);
        each(nodeList, function (n) {
            var parent = n.dom.parentNode;
            if (isWrappedNbsp(parent)) {
                add$2(SugarElement.fromDom(parent), nbspClass);
            } else {
                var withSpans = replaceWithSpans(editor.dom.encode(value(n)));
                var div = editor.dom.create('div', null, withSpans);
                var node = void 0;
                while (node = div.lastChild) {
                    editor.dom.insertAfter(node, n.dom);
                }
                editor.dom.remove(n.dom);
            }
        });
    };
    var hide = function (editor, rootElm) {
        var nodeList = editor.dom.select(selector, rootElm);
        each(nodeList, function (node) {
            if (isWrappedNbsp(node)) {
                remove$3(SugarElement.fromDom(node), nbspClass);
            } else {
                editor.dom.remove(node, true);
            }
        });
    };
    var toggle = function (editor) {
        var body = editor.getBody();
        var bookmark = editor.selection.getBookmark();
        var parentNode = findParentElm(editor.selection.getNode(), body);
        parentNode = parentNode !== undefined ? parentNode : body;
        hide(editor, parentNode);
        show(editor, parentNode);
        editor.selection.moveToBookmark(bookmark);
    };

    var applyVisualChars = function (editor, toggleState) {
        fireVisualChars(editor, toggleState.get());
        var body = editor.getBody();
        if (toggleState.get() === true) {
            show(editor, body);
        } else {
            hide(editor, body);
        }
    };
    var toggleVisualChars = function (editor, toggleState) {
        toggleState.set(!toggleState.get());
        var bookmark = editor.selection.getBookmark();
        applyVisualChars(editor, toggleState);
        editor.selection.moveToBookmark(bookmark);
    };

    var register = function (editor, toggleState) {
        editor.addCommand('mceVisualChars', function () {
            toggleVisualChars(editor, toggleState);
        });
    };

    var isEnabledByDefault = function (editor) {
        return editor.getParam('visualchars_default_state', false);
    };
    var hasForcedRootBlock = function (editor) {
        return editor.getParam('forced_root_block') !== false;
    };

    var setup = function (editor, toggleState) {
        editor.on('init', function () {
            applyVisualChars(editor, toggleState);
        });
    };

    var global$1 = tinymce.util.Tools.resolve('tinymce.util.Delay');

    var setup$1 = function (editor, toggleState) {
        var debouncedToggle = global$1.debounce(function () {
            toggle(editor);
        }, 300);
        if (hasForcedRootBlock(editor)) {
            editor.on('keydown', function (e) {
                if (toggleState.get() === true) {
                    e.keyCode === 13 ? toggle(editor) : debouncedToggle();
                }
            });
        }
        editor.on('remove', debouncedToggle.stop);
    };

    var toggleActiveState = function (editor, enabledStated) {
        return function (api) {
            api.setActive(enabledStated.get());
            var editorEventCallback = function (e) {
                return api.setActive(e.state);
            };
            editor.on('VisualChars', editorEventCallback);
            return function () {
                return editor.off('VisualChars', editorEventCallback);
            };
        };
    };
    var register$1 = function (editor, toggleState) {
        editor.ui.registry.addToggleButton('visualchars', {
            tooltip: 'Show invisible characters',
            icon: 'visualchars',
            onAction: function () {
                return editor.execCommand('mceVisualChars');
            },
            onSetup: toggleActiveState(editor, toggleState)
        });
        editor.ui.registry.addToggleMenuItem('visualchars', {
            text: 'Show invisible characters',
            icon: 'visualchars',
            onAction: function () {
                return editor.execCommand('mceVisualChars');
            },
            onSetup: toggleActiveState(editor, toggleState)
        });
    };

    function Plugin() {
        global.add('visualchars', function (editor) {
            var toggleState = Cell(isEnabledByDefault(editor));
            register(editor, toggleState);
            register$1(editor, toggleState);
            setup$1(editor, toggleState);
            setup(editor, toggleState);
            return get(toggleState);
        });
    }

    Plugin();

}());
